You can see your number reports in your account. Simply follow these steps:
Step 1: Log into your account
Step 2: Go to 'My Numbers'
Step 3: Next to each number on the right side there are a few icons. The second icon is for Reports; select it
Step 4: Depending on the package of the number, you may have several reports. Click on 'Show' for the report you want to view. Note that you can apply filters to your reports.